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        <h1 id="vocabularies-for-the-social-web">Vocabularies for the social Web</h1>

<p><a id="foaf"></a></p>

<h2 id="friend-of-a-friend-foaf">Friend of a Friend (foaf)</h2>

<h3 id="prefix-and-namespace">Prefix and namespace</h3>
<ul>
  <li><a href="http://xmlns.com/foaf/0.1/">foaf</a>: <a href="http://xmlns.com/foaf/0.1/">http://xmlns.com/foaf/0.1/</a></li>
</ul>

<h3 id="summary">Summary</h3>

<p>‘Friend of a Friend’ is a vocabulary that describes persons and organizations. It defines the terms that you can use to represent a user profile: name, picture, homepage…</p>

<h3 id="exemple-fragments">Exemple fragments</h3>

<div class="language-turtle highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kd">prefix</span><span class="w"> </span><span class="nn">foaf:</span><span class="w"> </span><span class="nl">&lt;http://xmlns.com/foaf/0.1/&gt;</span><span class="w">

</span><span class="err">:</span><span class="n">jcaesar</span><span class="w"> </span><span class="k">a</span><span class="w"> </span><span class="nn">foaf:</span><span class="n">Person</span><span class="p">;</span><span class="w">
    </span><span class="nn">foaf:</span><span class="n">title</span><span class="w"> </span><span class="s">"Imperator"</span><span class="p">;</span><span class="w">
    </span><span class="nn">foaf:</span><span class="n">name</span><span class="w"> </span><span class="s">"Gaius Julius Caesar"</span><span class="p">;</span><span class="w">
    </span><span class="nn">foaf:</span><span class="n">givenname</span><span class="w"> </span><span class="s">"Julius"</span><span class="p">;</span><span class="w">
    </span><span class="nn">foaf:</span><span class="n">family_name</span><span class="w"> </span><span class="s">"Caesar"</span><span class="p">;</span><span class="w">
    </span><span class="nn">foaf:</span><span class="n">nick</span><span class="w"> </span><span class="s">"Jul"</span><span class="p">.</span><span class="w">

</span><span class="err">:</span><span class="n">spqr</span><span class="w"> </span><span class="k">a</span><span class="w"> </span><span class="nn">foaf:</span><span class="n">Organization</span><span class="p">;</span><span class="w">
    </span><span class="nn">foaf:</span><span class="n">name</span><span class="w"> </span><span class="s">"Roman republic"</span><span class="p">;</span><span class="w">
    </span><span class="nn">foaf:</span><span class="n">member</span><span class="w"> </span><span class="err">:</span><span class="n">jcaesar</span><span class="p">.</span><span class="w">
</span></code></pre></div></div>

<p><a id="vc"></a></p>

<h2 id="vcard-vc">vCard (vc)</h2>

<h3 id="prefix-and-namespace-1">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.w3.org/2006/vcard/ns#">vc</a>: <a href="http://www.w3.org/2006/vcard/ns#">http://www.w3.org/2006/vcard/ns#</a></li>
</ul>

<h3 id="summary-1">Summary</h3>

<p>This vocabulary describes the vCard model, based on <a href="https://tools.ietf.org/html/rfc6350">RFC6350</a>. It is used for instance by the Profile Viewer of the <a href="https://cleopatra.solid.community/profile/card#me">Solid data browser</a>. Note that there is a lot of overlap between vCard and foaf. The main difference is tat vCard is aligned with an RFC, while foaf is a little lighter, but there are alignments bridging between the two of them, so choosing one does not shut you off from applications using the other.</p>

<h3 id="exemple-fragment">Exemple fragment</h3>

<div class="language-turtle highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kd">@prefix</span><span class="w"> </span><span class="nn">vc:</span><span class="w"> </span><span class="nl">&lt;http://www.w3.org/2006/vcard/ns#&gt;</span><span class="p">.</span><span class="w">


</span><span class="err">:</span><span class="n">me
</span><span class="w">    </span><span class="nn">vc:</span><span class="n">fn</span><span class="w"> </span><span class="s">"Gaius Julius Caesar"</span><span class="p">;</span><span class="w">
    </span><span class="nn">vc:</span><span class="n">organization-name</span><span class="w"> </span><span class="s">"Roman republic"</span><span class="p">;</span><span class="w">
    </span><span class="nn">vc:</span><span class="n">role</span><span class="w"> </span><span class="s">"Imperator"</span><span class="p">.</span><span class="w">
</span></code></pre></div></div>

<p><a id="as"></a></p>

<h2 id="activity-streams-as">Activity Streams (as)</h2>

<h3 id="prefix-and-namespace-2">Prefix and namespace</h3>
<ul>
  <li><a href="https://www.w3.org/ns/activitystreams#">as</a>: <a href="https://www.w3.org/ns/activitystreams#">https://www.w3.org/ns/activitystreams#</a></li>
  <li><a href="https://www.w3.org/TR/activitystreams-vocabulary/">Vocabulary documentation</a></li>
</ul>

<h3 id="summary-2">Summary</h3>

<p>‘Activity Streams’ is a vocabulary associated to the <a href="https://www.w3.org/TR/activitystreams-core">homonym standard</a>, used to represent a model for <strong>social interaction on the Web</strong>. It is for instance used in the <a href="https://www.w3.org/TR/activitypub">ActivityPub</a> protocol, instanciated by decentralized social networks such as <a href="https://mastodon.social/about">Mastodon</a> or <a href="https://gnu.io/social/">GNU Social</a>.</p>

<h3 id="exemple-fragments-1">Exemple fragments</h3>

<div class="language-json highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="p">{</span><span class="w">
  </span><span class="nl">"@context"</span><span class="p">:</span><span class="w"> </span><span class="s2">"https://www.w3.org/ns/activitystreams"</span><span class="p">,</span><span class="w">
  </span><span class="nl">"summary"</span><span class="p">:</span><span class="w"> </span><span class="s2">"Cleopatra joined a group"</span><span class="p">,</span><span class="w">
  </span><span class="nl">"type"</span><span class="p">:</span><span class="w"> </span><span class="s2">"Join"</span><span class="p">,</span><span class="w">
  </span><span class="nl">"actor"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span><span class="w">
    </span><span class="nl">"id"</span><span class="p">:</span><span class="w"> </span><span class="s2">"https://cleopatra.solid.community/profile/card#me"</span><span class="w">
  </span><span class="p">},</span><span class="w">
  </span><span class="nl">"object"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span><span class="w">
    </span><span class="nl">"type"</span><span class="p">:</span><span class="w"> </span><span class="s2">"Group"</span><span class="p">,</span><span class="w">
    </span><span class="nl">"name"</span><span class="p">:</span><span class="w"> </span><span class="s2">"A Simple Group"</span><span class="w">
  </span><span class="p">}</span><span class="w">
</span><span class="p">}</span><span class="w">
</span></code></pre></div></div>

<div class="language-turtle highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kd">@prefix</span><span class="w"> </span><span class="nn">as:</span><span class="w"> </span><span class="nl">&lt;https://www.w3.org/ns/activitystreams#&gt;</span><span class="p">.</span><span class="w">
</span><span class="kd">@prefix</span><span class="w"> </span><span class="nn">rdfs:</span><span class="w"> </span><span class="nl">&lt;http://www.w3.org/2000/01/rdf-schema#&gt;</span><span class="p">.</span><span class="w">
</span><span class="kd">@prefix</span><span class="w"> </span><span class="nn">xsd:</span><span class="w"> </span><span class="nl">&lt;http://www.w3.org/2001/XMLSchema#&gt;</span><span class="p">.</span><span class="w">

</span><span class="err">:</span><span class="n">party</span><span class="w"> </span><span class="k">a</span><span class="w"> </span><span class="nn">as:</span><span class="n">Event</span><span class="p">;</span><span class="w">
    </span><span class="nn">rdfs:</span><span class="n">label</span><span class="w"> </span><span class="s">"Party at my p(a)lace"</span><span class="p">;</span><span class="w">
    </span><span class="nn">rdfs:</span><span class="n">comment</span><span class="w"> </span><span class="s">"I'm celebrating the release of my book, 'De Bello Gallico'"</span><span class="p">;</span><span class="w">
    </span><span class="nn">as:</span><span class="n">startTime</span><span class="w"> </span><span class="s">"50BC-01-15T18:00:00-00:00"</span><span class="p">;</span><span class="w">
    </span><span class="nn">as:</span><span class="n">endTime</span><span class="w"> </span><span class="s">"50BC-01-16T05:00:00-00:00"</span><span class="p">.</span><span class="w">
</span></code></pre></div></div>

<p><a id="sioc"></a></p>

<h2 id="semantically-interlinked-online-communities-sioc">Semantically-Interlinked Online Communities (sioc)</h2>

<h3 id="prefix-and-namespace-3">Prefix and namespace</h3>
<ul>
  <li><a href="http://rdfs.org/sioc/ns#">sioc</a>: <a href="http://rdfs.org/sioc/ns#">http://rdfs.org/sioc/ns#</a></li>
  <li><a href="http://rdfs.org/sioc/spec/">Documentation</a></li>
</ul>

<h3 id="summary-3">Summary</h3>

<p>From the documentation: The SIOC (Semantically-Interlinked Online Communities) Core Ontology provides the main concepts and properties required to describe information from online communities (e.g., message boards, wikis, weblogs, etc.) on the Semantic Web. SIOC is a modular ontology, so you can pick from its different modules depending on your needs:</p>
<ul>
  <li><a href="http://rdfs.org/sioc/access#">http://rdfs.org/sioc/access#</a> - SIOC Access Ontology Module Namespace</li>
  <li><a href="http://rdfs.org/sioc/actions#">http://rdfs.org/sioc/actions#</a> - SIOC Actions Ontology Module Namespace</li>
  <li><a href="http://rdfs.org/sioc/argument#">http://rdfs.org/sioc/argument#</a> - SIOC Argumentation Ontology Module Namespace</li>
  <li><a href="http://rdfs.org/sioc/nepomuk#">http://rdfs.org/sioc/nepomuk#</a> - SIOC-Nepomuk Ontology Mappings</li>
  <li><a href="http://rdfs.org/sioc/quotes#">http://rdfs.org/sioc/quotes#</a> - SIOC Quotes Ontology Module Namespace</li>
  <li><a href="http://rdfs.org/sioc/services#">http://rdfs.org/sioc/services#</a> - SIOC Services Ontology Module Namespace</li>
  <li><a href="http://rdfs.org/sioc/swan#">http://rdfs.org/sioc/swan#</a> - SIOC-SWAN Ontology Mappings</li>
  <li><a href="http://rdfs.org/sioc/types#">http://rdfs.org/sioc/types#</a> - SIOC Types Ontology Module Namespace</li>
  <li><a href="http://rdfs.org/sioc/wikitalk#">http://rdfs.org/sioc/wikitalk#</a> - SIOC WikiTalk Ontology Module Namespace</li>
</ul>

<h3 id="example-fragment">Example fragment</h3>

<p>This example comes from the <a href="http://rdfs.org/sioc/spec/">SIOC specification</a></p>

<div class="language-turtle highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kd">@prefix</span><span class="w"> </span><span class="nn">sioc:</span><span class="w"> </span><span class="nl">&lt;http://rdfs.org/sioc/ns#&gt;</span><span class="w">
</span><span class="kd">@base</span><span class="w"> </span><span class="nl">&lt;http://johnbreslin.com&gt;</span><span class="p">.</span><span class="w">

</span><span class="nl">&lt;blog/creating-connections-between-discussion-clouds-with-sioc&gt;</span><span class="w"> </span><span class="k">a</span><span class="w"> </span><span class="nn">sioc:</span><span class="n">Post</span><span class="w"> </span><span class="p">;</span><span class="w">
  </span><span class="nn">sioc:</span><span class="n">has_container</span><span class="w"> </span><span class="nl">&lt;blog/index.php?sioc_type=site#weblog&gt;</span><span class="p">;</span><span class="w">
  </span><span class="nn">sioc:</span><span class="n">has_creator</span><span class="w"> </span><span class="nl">&lt;blog/author/cloud/&gt;</span><span class="p">;</span><span class="w">
  </span><span class="nn">sioc:</span><span class="n">content</span><span class="w"> </span><span class="s">"SIOC provides a unified vocabulary for content and interaction description: a semantic layer that can co-exist with existing discussion platforms."</span><span class="na">@en</span><span class="w"> </span><span class="p">;</span><span class="w">
  </span><span class="nn">sioc:</span><span class="n">topic</span><span class="w"> </span><span class="nl">&lt;blog/category/semantic-web&gt;</span><span class="p">;</span><span class="w">
  </span><span class="nn">sioc:</span><span class="n">topic</span><span class="w"> </span><span class="nl">&lt;blog/category/blogs&gt;</span><span class="p">;</span><span class="w">
  </span><span class="nn">sioc:</span><span class="n">has_reply</span><span class="w"> </span><span class="nl">&lt;blog/creating-connections-between-discussion-clouds-with-sioc/#comment-123928&gt;</span><span class="w">

</span><span class="nl">&lt;http://johnbreslin.com/blog/author/cloud/&gt;</span><span class="w"> </span><span class="k">a</span><span class="w"> </span><span class="nn">sioc:</span><span class="n">UserAccount</span><span class="p">;</span><span class="w">
  </span><span class="nn">rdfs:</span><span class="n">label</span><span class="w"> </span><span class="s">"Cloud"</span><span class="na">@en</span><span class="p">.</span><span class="w">

</span><span class="nl">&lt;http://johnbreslin.com/blog/2006/09/07/creating-connections-between-discussion-clouds-with-sioc/#comment-123928&gt;</span><span class="w"> </span><span class="k">a</span><span class="w"> </span><span class="nn">sioc:</span><span class="n">Post</span><span class="p">;</span><span class="w">
  </span><span class="nn">rdfs:</span><span class="n">seeAlso</span><span class="w"> </span><span class="nl">&lt;http://johnbreslin.com/blog/index.php?sioc_type=comment&amp;amp;sioc_id=123928&gt;</span><span class="w">
</span></code></pre></div></div>

<p><a id="cc"></a></p>

<h2 id="creative-commons-cc">Creative commons (cc)</h2>

<h3 id="prefix-and-namespace-4">Prefix and namespace</h3>
<ul>
  <li><a href="http://creativecommons.org/ns#">cc</a>: <a href="http://creativecommons.org/ns#">http://creativecommons.org/ns#</a></li>
  <li><a href="https://creativecommons.org/ns">Documentation</a></li>
</ul>

<h3 id="summary-4">Summary</h3>

<p>This vocabulary helps describing copyright licenses.</p>

<h3 id="example-fragment-1">Example fragment</h3>

<div class="language-turtle highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c1"># The Obelisk ontology is available under the CC 4.0 license...</span><span class="w">
</span><span class="nl">&lt;http://w3id.org/obelisk/ns/&gt;</span><span class="w"> </span><span class="nn">cc:</span><span class="n">license</span><span class="w"> </span><span class="nl">&lt;http://creativecommons.org/licenses/by/4.0/&gt;</span><span class="p">.</span><span class="w">

</span><span class="c1"># ... and here is a description of what that means</span><span class="w">
</span><span class="nl">&lt;http://creativecommons.org/licenses/by/4.0/&gt;</span><span class="w"> </span><span class="k">a</span><span class="w"> </span><span class="nn">cc:</span><span class="n">License</span><span class="p">;</span><span class="w">
    </span><span class="nn">cc:</span><span class="n">permits</span><span class="w"> </span><span class="nn">cc:</span><span class="n">Distribution</span><span class="p">;</span><span class="w">
    </span><span class="nn">cc:</span><span class="n">permits</span><span class="w"> </span><span class="nn">cc:</span><span class="n">DerivativeWorks</span><span class="p">;</span><span class="w">
    </span><span class="nn">cc:</span><span class="n">requires</span><span class="w"> </span><span class="nn">cc:</span><span class="n">Attribution</span><span class="p">.</span><span class="w">
</span></code></pre></div></div>

<p><a id="dc"></a></p>

<h2 id="dublic-core-dc">Dublic Core (dc)</h2>

<h3 id="prefix-and-namespace-5">Prefix and namespace</h3>
<ul>
  <li><a href="http://purl.org/dc/elements/1.1/">elements</a>: <a href="http://purl.org/dc/elements/1.1/">http://purl.org/dc/elements/1.1/</a></li>
  <li><a href="http://purl.org/dc/terms/">terms</a>: <a href="http://purl.org/dc/terms/">http://purl.org/dc/terms/</a></li>
</ul>

<p><a id="geonames"></a></p>

<h2 id="geonames">Geonames</h2>

<h3 id="prefix-and-namespace-6">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.geonames.org/ontology">geo</a>: <a href="http://www.geonames.org/ontology">http://www.geonames.org/ontology</a></li>
  <li><a href="http://www.geonames.org/ontology/documentation.html">Documentation</a></li>
</ul>

<p><a id="ical"></a></p>

<h2 id="ical">iCal</h2>

<h3 id="prefix-and-namespace-7">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.w3.org/2002/12/cal/ical">ical</a>: <a href="http://www.w3.org/2002/12/cal/ical">http://www.w3.org/2002/12/cal/ical</a></li>
</ul>

<p><a id="levt"></a></p>

<h2 id="linked-events">Linked events</h2>

<h3 id="prefix-and-namespace-8">Prefix and namespace</h3>
<ul>
  <li><a href="http://linkedevents.org/ontology/">levt</a>: <a href="http://linkedevents.org/ontology/">http://linkedevents.org/ontology/</a></li>
</ul>

<p><a id="meeting"></a></p>

<h2 id="meeting">Meeting</h2>

<h3 id="prefix-and-namespace-9">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.w3.org/ns/pim/meeting#"><code class="highlighter-rouge">mee</code></a>: <a href="http://www.w3.org/ns/pim/meeting#">http://www.w3.org/ns/pim/meeting#</a></li>
</ul>

<p><a id="mo"></a></p>

<h2 id="music-ontology-mo">Music Ontology (mo)</h2>

<h3 id="prefix-and-namespace-10">Prefix and namespace</h3>
<ul>
  <li>mo: http://purl.org/ontology/mo/</li>
</ul>

<p><a id="rlog"></a></p>

<h2 id="rdf-logger-rlog">RDF Logger (rlog)</h2>

<h3 id="prefix-and-namespace-11">Prefix and namespace</h3>
<ul>
  <li><a href="http://persistence.uni-leipzig.org/nlp2rdf/ontologies/rlog#">rlog</a>: <a href="http://persistence.uni-leipzig.org/nlp2rdf/ontologies/rlog#">http://persistence.uni-leipzig.org/nlp2rdf/ontologies/rlog#</a></li>
</ul>

<p><a id="schema"></a></p>

<h2 id="schemaorg-schema">Schema.org (schema)</h2>

<h3 id="prefix-and-namespace-12">Prefix and namespace</h3>
<ul>
  <li><a href="https://schema.org/">schema</a>: <a href="https://schema.org/">https://schema.org/</a></li>
</ul>

<p><a id="time"></a></p>

<h2 id="time">Time</h2>

<h3 id="prefix-and-namespace-13">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.w3.org/2006/time#">time</a>: <a href="http://www.w3.org/2006/time#">http://www.w3.org/2006/time#</a></li>
  <li><a href="https://www.w3.org/TR/owl-time/">Documentation</a></li>
</ul>

<p><a id="tzont"></a></p>

<h1 id="timezone-ontology-tzont">Timezone ontology (tzont)</h1>

<h3 id="prefix-and-namespace-14">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.w3.org/2006/timezone#">tzont</a>: <a href="http://www.w3.org/2006/timezone#">http://www.w3.org/2006/timezone#</a></li>
</ul>

<p><a id="wgs84"></a></p>

<h2 id="wgs84-coordinates-wgs84_pos">WGS84 coordinates (wgs84_pos)</h2>

<h3 id="prefix-and-namespace-15">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.w3.org/2003/01/geo/wgs84_pos#">wgs84_pos</a>: <a href="http://www.w3.org/2003/01/geo/wgs84_pos#">http://www.w3.org/2003/01/geo/wgs84_pos#</a></li>
</ul>

<p><a id="wf"></a></p>

<h2 id="workflow-and-issue-tracking-wf">Workflow and issue tracking (wf)</h2>

<h3 id="prefix-and-namespace-16">Prefix and namespace</h3>
<ul>
  <li><a href="http://www.w3.org/2005/01/wf/flow#">wf</a>: <a href="http://www.w3.org/2005/01/wf/flow#">http://www.w3.org/2005/01/wf/flow#</a></li>
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